Photo: derekkeats / cc With countless endangered animals teetering on the brink of extinction throughout the world, the work of preservation has never been more important. But as conservationists work tirelessly to mitigate the numerous dangers which threaten to eliminate entire species altogether, others are exploring advances in medical technology which could hold the key to reviving them in case that happens. Scientists from The Scripps Research Institute at the San Diego Zoo have begun collecting stem cells from endangered species in th… Read the full story on TreeHugger